# Read data and append it to array, best practice?

**URL:** https://fortran-lang.discourse.group/t/read-data-and-append-it-to-array-best-practice/1915
**Category:** Help
**Created:** [September 22, 2021, 2:39pm UTC](https://fortran-lang.discourse.group/t/read-data-and-append-it-to-array-best-practice/1915 "2021-09-22T14:39:15Z")
**Posts on this page:** 1
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### Author: ![Beliavsky](https://avatars.discourse-cdn.com/v4/letter/b/ba8739/32.png) [@Beliavsky](https://fortran-lang.discourse.group/u/Beliavsky)
#### Post date: [September 22, 2021, 8:01pm UTC](https://fortran-lang.discourse.group/t/read-data-and-append-it-to-array-best-practice/1915/8 "2021-09-22T20:01:57Z")

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To generalize the OP’s question, it would be nice if Fortran had a general capability to combine two arrays along a specified axis, similar to [numpy.concatenate](https://numpy.org/doc/stable/reference/generated/numpy.concatenate.html#numpy.concatenate) . I [requested this](https://github.com/fortran-lang/stdlib/issues/431) for stdlib. Is this something that would be part of a Fortran library for the [Mathematics of Arrays](https://fortran-lang.discourse.group/t/mathematics-of-arrays/1685)?

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